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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 6.1 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required.

Exploit ScenarioDerived

A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 16.9% exploitation probability (EPSS)

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AnalysisAI

In Bootstrap before 3.4.1 and 4.3.x before 4.3.1, XSS is possible in the tooltip or popover data-template attribute. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Affected Packages

composer bootstrap fix: 3.4.1, 4.3.1
composer bootstrap-sass fix: 3.4.1
composer bootstrap.less fix: 3.4.1
composer bootstrap.sass fix: 4.3.1
composer org.webjars:bootstrap fix: 3.4.1, 4.3.1
composer twbs/bootstrap fix: 3.4.1, 4.3.1
composer twitter-bootstrap-rails fix: 5.3.0
maven bootstrap fix: 3.4.1, 4.3.1
maven bootstrap-sass fix: 3.4.1
maven bootstrap.less fix: 3.4.1
maven bootstrap.sass fix: 4.3.1
maven org.webjars:bootstrap fix: 3.4.1, 4.3.1
maven twbs/bootstrap fix: 3.4.1, 4.3.1
maven twitter-bootstrap-rails fix: 5.3.0
npm bootstrap fix: 3.4.1, 4.3.1
npm bootstrap-sass fix: 3.4.1
npm bootstrap.less fix: 3.4.1
npm bootstrap.sass fix: 4.3.1
npm org.webjars:bootstrap fix: 3.4.1, 4.3.1
npm twbs/bootstrap fix: 3.4.1, 4.3.1
npm twitter-bootstrap-rails fix: 5.3.0
nuget bootstrap fix: 3.4.1, 4.3.1
nuget bootstrap-sass fix: 3.4.1
nuget bootstrap.less fix: 3.4.1
nuget bootstrap.sass fix: 4.3.1
nuget org.webjars:bootstrap fix: 3.4.1, 4.3.1
nuget twbs/bootstrap fix: 3.4.1, 4.3.1
nuget twitter-bootstrap-rails fix: 5.3.0
rubygems bootstrap fix: 3.4.1, 4.3.1
rubygems bootstrap-sass fix: 3.4.1
rubygems bootstrap.less fix: 3.4.1
rubygems bootstrap.sass fix: 4.3.1
rubygems org.webjars:bootstrap fix: 3.4.1, 4.3.1
rubygems twbs/bootstrap fix: 3.4.1, 4.3.1
rubygems twitter-bootstrap-rails fix: 5.3.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 7 packages in composer, maven, npm and 2 more

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. In Bootstrap before 3.4.1 and 4.3.x before 4.3.1, XSS is possible in the tooltip or popover data-template attribute. Affected products include: Getbootstrap Bootstrap, F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager. Version information: before 3.4.1.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.1 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

DescriptionNVD

In Bootstrap before 3.4.1 and 4.3.x before 4.3.1, XSS is possible in the tooltip or popover data-template attribute.

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 178 npm packages depend on bootstrap (168 direct, 11 indirect)

Ecosystem-wide dependent count for version 4.0.0.

Threat Intelligence Overview

EPSS Score
16.9%
Top 3% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 16.9%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: +17
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)NVD

cpe:2.3:a:getbootstrap:bootstrap:*:*:*:*:*:*:*:*
cpe:2.3:a:getbootstrap:bootstrap:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
+ 36 more
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9.8 Sep 24

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CVE-2012-1493 HIGH POC
7.8 Jul 09

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CVE-2015-3628 CRITICAL POC
9.0 Dec 07

The iControl API in F5 BIG-IP LTM, AFM, Analytics, APM, ASM, Link Controller, and PEM 11.3.0 before 11.5.3 HF2 and 11.6.

CVE-2015-7547 HIGH POC
8.1 Feb 18

Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the libresolv library in the GNU C

CVE-2014-0196 MEDIUM POC
5.5 May 07

The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver a

CVE-2025-53521 CRITICAL POC
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F5 BIG-IP APM (Access Policy Manager) contains a remote code execution vulnerability triggered by specific malicious tra

CVE-2014-2928 HIGH POC
7.1 May 12

The iControl API in F5 BIG-IP LTM, APM, ASM, GTM, Link Controller, and PSM 10.0.0 through 10.2.4 and 11.0.0 through 11.5

CVE-2016-9244 HIGH POC
7.5 Feb 09

A BIG-IP virtual server configured with a Client SSL profile that has the non-default Session Tickets option enabled may

CVE-2025-20029 HIGH
8.7 Feb 05

F5 BIG-IP contains an authenticated command injection in the iControl REST API and TMOS Shell (tmsh) save command. Authe

CVE-2023-46747 CRITICAL POC
9.8 Oct 26

Undisclosed requests may bypass configuration utility authentication, allowing an attacker with network access to the BI

References

Advisories & patches
PATCH https://github.com/twbs/bootstrap/pull/28236 PATCH https://www.tenable.com/security/tns-2021-14 ADVISORY https://blog.getbootstrap.com/2019/02/13/bootstrap-4-3-1-and-3-4-1/ REF http://packetstormsecurity.com/files/156743/OctoberCMS-Insecure-Dependencies.html REF http://seclists.org/fulldisclosure/2019/May/10 REF http://seclists.org/fulldisclosure/2019/May/11 REF http://seclists.org/fulldisclosure/2019/May/13 REF http://www.securityfocus.com/bid/107375 REF https://access.redhat.com/errata/RHSA-2019:1456 REF https://access.redhat.com/errata/RHSA-2019:3023 REF https://access.redhat.com/errata/RHSA-2019:3024 REF https://github.com/twbs/bootstrap/releases/tag/v3.4.1 REF https://github.com/twbs/bootstrap/releases/tag/v4.3.1 REF https://lists.apache.org/thread.html/10f0f3aefd51444d1198c65f44ffdf2d78ca3359423dbc1c168c9731%40%3Cdev.flink.apache.org%3E REF https://lists.apache.org/thread.html/17ff53f7999e74fbe3cc0ceb4e1c3b00b180b7c5afec8e978837bc49%40%3Cuser.flink.apache.org%3E REF https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E REF https://lists.apache.org/thread.html/52bafac05ad174000ea465fe275fd3cc7bd5c25535a7631c0bc9bfb2%40%3Cuser.flink.apache.org%3E REF https://lists.apache.org/thread.html/52e0e6b5df827ee7f1e68f7cc3babe61af3b2160f5d74a85469b7b0e%40%3Cdev.superset.apache.org%3E REF https://lists.apache.org/thread.html/54df3aeb4239b64b50b356f0ca6f986e3c4ca5b84c515dce077c7854%40%3Cuser.flink.apache.org%3E REF https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E REF https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E REF https://lists.apache.org/thread.html/r3dc0cac8d856bca02bd6997355d7ff83027dcfc82f8646a29b89b714%40%3Cissues.hbase.apache.org%3E REF https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E REF https://seclists.org/bugtraq/2019/May/18 REF https://support.f5.com/csp/article/K24383845 REF https://support.f5.com/csp/article/K24383845?utm_source=f5support&amp%3Butm_medium=RSS REF https://www.oracle.com/security-alerts/cpuApr2021.html

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